Adjustable valve-seat-dressing device.



G. W. TROUTMAN. ADJUSTABLE VALVE SEAT DRESSING DEVICE.

A P P L I U A T I 0 N F I L B D A U G 1 6 1 9 1 3.

1,088,945. Patented Mar.3,191

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lVlT/VESSESI G. W. TROUTMAN. ADJUSTABLE VALVE SEAT DRESSING DEVICE.

APPLICATION FILED AUG. 16. 1013 1,088,945. Patented Mar. 3, 1914.

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GEORGE W. TBOUTMAN, 0F ClALDWELL, KANSAS.

ADJUSTABLE VALVE-SEAT-DBESSING DEVICE.

To all whom it may concern:

Be it known that I, Gnoaon TROUT- United States, residing at Caldwell, in the county of Sumner and State of Kansas, have invented-a new and useful Adjustable Yalve-Seat-Dressing De"- vice, of which-the following is a tion.

My invention relates to distinct improvements in adjustable valve seat-dressing devices, having aplurality of cutting or dressing members, having a connecting mechanism which adapts the cutting members to readily being adjusted at any angle or de-;

sired size, so as to adapt the device to sun facing or reseating valve'seats of various sizes and to the surfacing of valve seats generally.

In the various types of internal combustion engines and in automobile engines .especially the valve seats are generally conical in shape and are formed in many in:

stances in the main valve casing, or the valve casing where it is removableis often deep seated and difficult to get at and my device is particularly valuable because itis adapted to reface the valve seats without removing the valve casings from the parts connected and the device of dressing the valve seat.

In use valves of all types frequently become injured by foreign substances being pressed against the valve seat by the action of the valve, and in many instances'the valve seat becomes pitted and corroded by both chemical and mechanical action, and in the construction of the leading types of valves and especially those used in automobile engines the valve can usually be easily removed when it becomes deeply pitted and chucked in a lathe and properly refaced, but in many" instances lit is almost impossible and very expensive to'reface the valve seat in a lathe, and in many instances after removing the valve and refacing' it in a lathe the valve seat is so deeply pitted-that it cannot be successfully ground toa per feet working surface, but with my device the valve seat can be quickly and smoothly resurfaced at any desired angle to fit the valve.

In automobile and'other types of internal combustion engines the valves are usually provided with stems which vary in size and Specification of Letters Patent.

specifica- Patented Mar. 3, 1914.

Application filed August 16,1913. Serial no. 785,061.

length gines. These valve stems fit in perforations in the 'valve bodies or casings and act as guides for the valves to work in and keep them in alinement with their seats and one of the particular objects of my invention is to provide the device with an assortment of different sizes of interchangeable supplemental axial shafts which can readily be adapted to take the place of the various si e valve stems and to fit in the valve stem perforations so as to act aS-a guide and axial hearing to keep'the device in perfect alinement with the valve seat, these supplemental shafts are provided with means to rigidly secure them to the lower portion of the mam axial shaft and in perfect alinement with it, and' are readily detachable from the main axial shaft.

Another object isto provide the main axial shaft with two members which act as a connecting mechanism to connect the cuttingzmembers to,"one of said members being slidable on the main axial shaft so that the cutting members can be adjusted transversely to the main axial shaft to any on different makesandsizes of endesired size or ,angle, also to provide the movable member with means to rigidly secure'it to the mainaxial shaft in any desired position.

I attain these and otherv objects which will appear later by the mechanism illustrated in the accompanying drawings, in

which Figure 1, in section of ed'to refacing the valve seat of an internal combustion engine. Fig.2, is an elevation partlyl in section showing the supplemental axial shaft of greater diameter than the main axial shaft so as to'adapt the device is a vertical elevation partly to fit the valve stem perforation in the valve" casing where the valve stem is larger than the main axial shaft, it also shows means of connecting the supplemental shaft to the main axial shaft, Fig. 3, is an elevation partly in section showing the supplemental shaft of less diameter than the main axial shaft so as to adapt the device to fit the valve stem perforation in the valve casing where the valve stem is smaller than the main axial shaft and shows the means of connecting the two shafts together. Fig. 4. is an elevation of the top portion of the mam axial shaft and shows the top part squared so as to adapt it to any drill chuck,

the device and shows it adaptbit stock or other device adapted to receive a. squared shaft for the purpose of imparting rotary motion to it. Fig. 5, is an elevation of the top portion of the main axial shaft and shows \an angular head formed thereon which is adapted to-be engaged by any ordinary bit stock or drill chuck' for rotating the device. Fig. 6, is a top plan view partly in section of the movable member to which the upper ends of the cutting members are connected. Fig. 7, is a cross section through one of the cutting members on the dotted line bb. Fig. 8, is a vertical section through Fig. 6, on the dotted line c0, and shows the shaft in elevation. Fig. 9, is a top plan view partly in section of thestationary member to which the lower ends of the cutting membersare connected. Fig. 10, is a cross section through Fig. 11, on the dotted line a'a. Fig. 11, is a detailed view in perspective of the cutting members and the means of connecting them member 11, which has its center perforated. to receive the main axial shaft 1, and ex-' to ether. bimilar characters of reference refer to similar parts throughout the several views.

The main axial shaft 1, to which the sup ple'mental axial shaft 2, is rigidly connected at 5, by means of the reduced threaded portion 20,'on the lower part of the main axial shaft 1, the threaded portion 20 being adapted to screw into the threaded perforation 21, in the upper portion of the supplemental axial shaft 2, so as to connect the two shafts perfectly rigid.

In the-construotion of the supplemental axial shafts of the various sizes and lengths so that they may fitthe valve stem perforations 4, in the valve stem casing 18, which receives the valve stem and acts as its guide the threaded perforations 21., are made to fit and rigidly screw onto the reduced threaded portion 20, and by this means the supplemental axial shaft 2, can always be selected of such size as to just fit, the valve stem perforation 4, and the supplemental axial shaft 2, is thereby rotatable in an. accurate manner in the valve perforation 4, which acts as a guide to keep theentire device in perfect alinement with the valve seat. 1

Rigidly secured tothe lower portion of the main axial shaft 1, is the stationary tending radially outward are the -'proj ections 11", which have the rectangular shaped perforations 24,.formed in them to receive the. reduced ends'32, of the cutting members 10. The'red'uced ends 32, have in them the perforations 31, through which pass the pivotal screws 6, or their equivalent. The pivotalscrews 6, have the enlarged cylindrical portion 28, which acts as a pivot to secure the cutting members 10, to the stationary member 11, the radial projections 11 whichform the rectan ular erforations 24- are messes perforated in a manner similar to the perforations 30, shown in Fig. 8, to receive the pivotal screws 6, which are threaded at their small ends 27, and are adapted to screw into the threaded perforations in the radial projections 11 the'outward ends of the radial projections 11*, are preferably rounded as shown at 25. I

The upper cutting members 7, have one of their ends reduced as at 33, which are adapt ed to pivotally work on the screws 6, within the rectangular perforations 33 in' one of ends of the cutting members 10, the stationary member 11, is preferably rigidly'secured to the main axial shaft 1, by the pin 2.9, or its equivalent or it may be rigidly secured to the main axial shaft by means of properly disposed set screws, or by any other suitable means desired.

The movable member 12, has its center perforated to receive theshaft 1, so that itis adapted to move upward and downward thereon, the upper portion of the member'12; is composed of an annular collar 16, WhiCl1 inay'have a plurality .of threaded perfora-i them; The radial projections 12, llzfl' the perforations 30, one of the sides of which is threaded'to receive the pivotal screws 6,

by whichthe reduced ends 32, of the upper cutting members 7, are secured to the member 12, by inserting the reduccdends 32, into the rectangular shaped perforations 24, and passing the pivotal screws 6, through the perforations 30 and 31. While I prefer to use the pivotal screws 6 to connect the cutting members 7 and 10 to the members 11 and l2other means may be used such as a pin. as shown at 26, or rivets which form a pivot may be used but I prefer the pivotal screws 6 as they permit-the members to be easily taken apart for sharpening or repair purposes. The cutting members 10, preferably have their lower surfaces slightly angular to form a sharp cutting edge as shown by 3 1, in Fig. 7. v

19 22 and-23 shows a plurality of means for imparting a rotary motion to the device. 19 shows the main axial shaft -1- at its upper portion of the same form and size as the entire shaft, any bitstock, hand drill or machine drill having a chuck adapted to receiveand hold an axial shaft may be attached to the main axialshaft -1- at 19 and a rotary motion imparted to the device for facing or refacing the valve seat, or'it.

may be chucked in a lathe and used in that I manner. 22 shows the extreme upper portion of the main axial shaft squared so that to receive a squared shaft it canbe oper-' where it is desired to use it in connection with a bit stock, hand drill or chuck adapted atively secured therein and a rotaiy motion lar head formed on imparted to the device.

' main axial-shaft which is adapted to being engagedfby any ordinary drill chuck for rotating the device;

The reduced portions 32 and 33 of the cutting members 7 and 10 may have their edges which are left by their reductionsquarc as shown at 8, or they may be rounded as shown The dotted lines 14 indicate the movement of the cutting members and their mechanism and show that the device can be successfully adapted 'to any size or shape of conical valve seat, the valve seat being indicated by 17 and the valve chamber by 9.

In operation the valve is removed from the casing and a supplementalv shaft is selected of the proper size stem perforation, the supplemental shaft 2, is inserted in the and the movable member 12 is adjusted upward and downward until thecutting members 10, are perfectly adapted to facing the valve seat 17 at the proper angle the member can be made in'the in the claims, and

"YVhat I do claim is:-

1. In an invention of the character'described a valve seat dressing device, comprising a main axial shaft means on the lower portion of said shaft for rigidly attaching thereto a supplemental shaft in axial alinement therewith, a member slidable on, the

upper portion of the main axial shaft, said slidable member having a central perfora' tion adapted to receive themain axial shaft, means for securing said slidable member, to

the shaft in a given position, means on the slidable member to pivotally connect the up per ends of the cutting members, cutting members adapted to dressing a valve seat,

and means for imparting a rotary motion to the device.

a 2. In an invention of the character described a valve seat dressing device, comprising a main axial shaft means on the lower portion of said shaft-for rigidly attaching 23 shows an anguv the upper portion of the means for securing said per stationary member ing to fit the .valve valve stem perforation 4,

device without departing from the scope of the invention as expressed thereto asupplemental' shaft in axial alinement therewith, a member slidable on the u per portion of the main axialshaft, said slidable member havingha central perfora: tion adapted to receive t e main axial shaft, slidable member to the shaft in a given position, means on the slidable member to pivotally connect the upends of the cutting member's, cutting members adapted to dressing a valve seat, a

member having a centraLperforation adapted to receive the shaft,-means on said stationary member to pivotally connect' the lower ends of the cutting members, and means for imparting a rotary motion" to the device. 7

3. In an invention of the character described a valve seat dressing device, comprisa main axial shaft and a supplemental shaft rigidly connected to the lower portion of the main shaft in axial alinement therewith, a stationary member rigidly secured rigidly secured to the lower-portion of the main axial shaft said to the lower portion of the main'axial shaft,

said stationary member having a central perforation adapted to receive the main axial shaft, means on said stationary member to pivotally connect the lowerends of the cutting 'members, cutting members adapted to dressing a valve seat, a member slidable on the upper portion of the main axial shaft and adapted to pivotally connect 'the upperends of said cutting members, said movable member being adapted to slide upward and downward on the main axial shaft and'having means the shaft in a given position so asto adapt the cutting members to a desired size and angle and means for imparting a rotary motlon to the device.

for rigidly securing it to s 4. In an invention of the character de scribed a valve seat dressing device, comprising a main axial shaft and a supplemental shaft rigidly connected to the main shaft in axial alinement therewith, a member slidable on the main shaft, means for rigidly securing said slidable member in a given position, said slidable member havin tral perforation adapted to receive t e main axial shaft, means on the slidable member to pivotally connect the upper ends of the cutting members, cutting members adapted to dressing a valve seat and means for imparting a rotary motion to the device.

In testimony whereof, I have signed this specification in the'presence of two subscribit cen- 

